This rugged mesh bag is designed to hold pumps in either horizontal or vertical orientation Used in skimmers or independently as a mechanical pre filter in open pond applications Rigid mesh bag protects pump from harmful debris Accommodates most popular pump sizes Sturdy mesh is sized to be both tear and clog resistant Bags are extra tall to extend above water level in most skimmers, no need to tie-off top of bag 24-in x 24-in Carded